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The principal solution of costheta=-(sqr...

The principal solution of `costheta=-(sqrt(3))/(2)` is

A

`-(pi)/(6)`

B

`(3pi)/(5)`

C

`(5pi)/(6)`

D

`(7pi)/(6)`

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Knowledge Check

  • The principal solution of costheta=(1-sqrt(3))/(2sqrt(2)) is

    A
    `75^(@)`
    B
    `-75^(@)`
    C
    `105^(@)`
    D
    `-15^(@)`

  • The principal solution of sintheta=sqrt((1+sqrt(2))/(2sqrt(2))) is

    A
    `22.5 ^(0)`
    B
    `67.5^(0)`
    C
    `72^(0)`
    D
    `9^(0)`

  • The principal solution of sintheta=-(1)/(2) is

    A
    `-(pi)/(4)`
    B
    `-(pi)/(6)`
    C
    `-(pi)/(3)`
    D
    `(7pi)/(6)`

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    The principal solution of tanx=sqrt(3) is theta then find 3theta .

    Find the principal solutions of the equation six x = (sqrt3)/(2).

    Find the principal solution of the equation tan x =- (1)/(sqrt3).

    Observe the following statements Assertion (A) : The general solution for costheta=(3)/(2) is theta=2npipmcos^(-1)(3//2) Reason (R ) : The general solution for costheta=k is theta=2npipmalpha, n inz where 'alpha' is principal value, alpha in[0,pi] and |k|le1 . Then the true statement among the following is

    The solution set of cos 2theta = (sqrt(3)-1)/(2sqrt(2)) is

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